From social mate to social hate

Of course Albert Einstein
didn't mean what I just did, but he came up with something important a hundred years ago:

"He realized, however, that the principle of relativity could also be extended to gravitational fields, and with his subsequent theory of gravitation in 1916, he published a paper on general relativity."

"In physics, a gravitational field is a model used to explain the influence that a massive body extends into the space around itself, producing a force on another massive body."